Astronomy & Space

If Earth's mass not its atmosphere was squeezed to the s

If Earths mass not its atmosphere was squeezed to the size of a soccer ball would it still hold its atmosphere have same surface gravity?And if I stood on it could I propel it through space with a handheld laser propulsion gun....

Bright object in the night sky, even in the city. Is this Si

Bright object in the night sky, even in the city. Is this Sirius?I m in New York City, looking South, and this object is about 37 degrees up from the horizon. From a quick Google search it appears that this is the brightest object in the sky...

So if they ever upgraded Pluto back to planet status ( from

So if they ever upgraded Pluto back to planet status ( from a dwarf planet) would they have to make Eris a planet too?...

What is it like to die in outer space?

What is it like to die in outer space?...

If there was going to be a dinosaur killer sized asteroid ab

If there was going to be a dinosaur killer sized asteroid about to slam into Earth, would the worlds governments just not tell the public?...

Universe meaning of seeing a shooting star? & is it good

Universe meaning of seeing a shooting star? is it good luck? first time I’ve ever seen one in my City.?...

Is the Universe cooling?

Is the Universe cooling?At what rate?...

Where will the circumestellar habitable zone of the Sun will

Where will the circumestellar habitable zone of the Sun will be after Earth is destroyed?...

With an increase in technology, why doesn't NASA re-do a

With an increase in technology, why doesnt NASA re-do a few projects?We launched Voyager in the late 70s which had the same technology as a key fob, and the Hubble telescope was launched in the 90s, when cameras were advanced for that time b...

In this photo of the lined up planets in the sky, why does J

In this photo of the lined up planets in the sky, why does Jupiter look larger than the moon? I know its huge, but the moon is much closer?Sorry, I know this may be a stupid question, but Im just curious....

What are the chances humans reach Mars by 2050? Do we even h

What are the chances humans reach Mars by 2050? Do we even have the technology to do so currently?...

Could space aliens impregnate an Earth woman?

Could space aliens impregnate an Earth woman?Sometimes I hear about people who claim to be carrying space alien babies....

We are limited to orbits of ISS so why not invent a large Sp

We are limited to orbits of ISS so why not invent a large Space Shuttle to transport things and people..?...

What do you think Carl Sagan looks like now?

What do you think Carl Sagan looks like now?...

If information cannot be destroyed, then what happens to inf

If information cannot be destroyed, then what happens to information that gets sucked into a black hole?...